The authorities have a complete service, starting from the team of investigators and arresters. Does your desire to catch these "scammers" do more than simply drag them to justice? All you need to do is make a report about your problem, or you can offer them the compensation you mean here privately so that your case is handled exclusively (outside business hours).
How, do I need to go to Finland?
What you need to know is that the majority of exchange businesses take offshore licenses because the countries where they operate are more complicated or don't allow the business at all. To make individual arrests, it may require the cooperation of several combinations of authorities.